[vtkusers] problem with setusermatrix

[fabio depascalis]

Hi all,

I have noticed that transforming an actor with SetUserMatrix:

actor->SetUserMatrix(matrix); **

work well, but don't update the orientation and position value of my
actor; infact printing
GetOrientation() and GetPosition() before and after ** give me the
identical value;

How can i resolve this problem?

Thanks